Experimental Realization of Quantum Violation of Entropic Noncontextual Inequality in Four Dimension Using IBM Quantum Computer

TL;DR

This paper demonstrates experimentally that a four-level quantum system violates an entropic noncontextual inequality using IBM's quantum computer, challenging local realist models in quantum mechanics.

Contribution

First experimental violation of entropic noncontextual inequality in a four-level system using a real quantum computer.

Findings

Violation of entropic noncontextual inequality confirmed

Disproves local realist models in four-dimensional quantum systems

Uses IBM quantum computer for experimental realization

Abstract

In quantum information theory, entropic inequalities act as the necessary and sufficient conditions to noncontextuality. Here, we first experimentally demonstrate the violation of the entropic noncontextual inequality in a four-level quantum system, by using the five-qubit IBM quantum computer. The experimental result disproves the existence of a local realist model.